Air cleaner



June l2, 1934. Al A CARLSON 1,962,425

Ariz CLEANER Filed Oct. 23, 1933 2 Sheets-Sheet l June 12, 1934. y A; CRlv- SION u AIR CLEANER Filed Oct. '25,l 1955 l 2 vsheets-Sheet 2 Wmme smud Patented June .12, i934 unirey AIR CLEANER,

Albin A. Carlson, Ludington, Mich..

Application October 23,

6 Claims.

novel air cleaner, this view being taken along the line 1-1 of Fig. 2.

Fig. 2 is a sectional view taken along the line 2 2 of Fig. l.

Fig. 3 is a cross sectional view taken along the line 3-3 of Fig. 2. 4

Fig. 4 illustrates a sectional view through the rotating cleaning element. v Fig. 5 illustrates a sectional view through a 26 modified form of rotating cleaning device.

Like numerals refer to like parts throughout the several views.

Referring tothe drawings, numeral 10 indicates the central part of the housing, this being pref- 25 erably of rectangular shape and having a sheet metal crank case portion 11 attached thereto by means ofthe bolt constructions 12 as is clearly shown in Fig. 1.

An upper housing 13 is-'provided 36 14, this flange 14 resting upon the upper side of the central portion 10. The upper housing is ex7 tended downwardly, see Figs. 2 and 3, whereby a narrow elongated chamber l5 is formed. The inner wall of this chamber, designated by the 35 numeral 16, has a circular opening 17 therein. The opposite wall 18 of this elongated chamber is provided with a boss 19 from which the shaft 20 extends, this shaft being shouldered as indicated at 21 for a purpose to be described later.

The upper portion 13 of the housing has a lip 22 extending therearound and a screen 23 is positioned thereover. A cover plate 24 is fastened to the upper portion 13 by means of the bolts 25 and an-outlet pipe 26 is provided as' shown. 45 Thus the air passes upwardly as indicated by the arrows in Fig. 2 and outwardly through the outlet pipe 26. v

An inlet casting 27 covers the remainder of the .open top of the member 13 and provides an inlet 5o for the incoming air. The air passes downwardly as indicated by the arrows in Fig. 1. It is to be understood that the inlet casting 27 may have a relatively long inlet pipe extending upwardly into the air whereby the incoming air is as free from 55 dust as is possible.

1933, serial No.. 694,743

(or. iss-2i) The upper portion 13 is attached to the centrar portion 10 by means of the bolts 28 as is clearly shown in Figs. 1 and 3.

The stufling box construction 30, see Fig. 1, revolubly carries a shaft 31 and is bolted as indicated at 32 onto the upper housing member 13. The shaft 31 carries propelling means at one end, such as the fan 33, and a worm 34 is located at its inner end, this worm 34 meshing with the worm wheel 35.

A series of corrugated discs, see Figs. 1 and 4, as designated by the reference numeral 36, are connected together by means of bolts 37 and l spacing means 38 hold the several discs as shown.

Also, the bolts 37 pass through the worm wheel and also extend through a circular plate member 39, see Fig. 2, and thus the severalmentioned elements rotate as a unit.

In operation, the'fan, rotated by movement of the air thereby, rotates the shaft 31, worm 3,4, and worm wheel 35, the latter revolving' the series of discs. l

The plate member 39 is attached to the cylindrical member 40A as by being welded thereto as indicated at 41. A bronze sleeve 42, having a shoulder 43, provides a bearing for the member 40. The member 40 and its sleeve 42 rotate upon the shaft 20, the series of discs being carried thereby. The member 40 provides a sturdy long lived construction. the previously mentioned shoulder 21 and prevents longitudinal movement of the construction just set forth in one direction while a curved bearing member 44, attached to the central housing member 10, see Fig. 2, prevents movement in the other direction.

A radially extending member has an axial sleeve 46, this axial sleeve 46 snugly engaging the opening 17 in the inner wall 16, previously mentioned, and spaced concentric screen members 47 and 48 extend therefrom, a member 49, see Fig. 2 particularly, being fastened at the other ends of the screen members. Air filtering material 50 is located between these screens. l

If desired, the axial sleeve member 46 may be loosely received Within the opening 17 and the outer screen member 48 be expanded so as to t snugly within the inner edges of the several discs whereby the inner ltering device will rotate at the same speed as the outer filtering device. However, this is not the preferred construction. Also, the casing has an opening 54 covered by the plate 55 by means of studs 56. This opening is adapted to receive the stuffing box construction 30 whenever it is desired to reverse the same.

A shoulder 43 abuts against lill" Fig. 5 shows a series of spaced plates 52 of annular formation, such having fins or ledges 53. The fins overlap as shown and thus the air currents passing between the plates are forced to follow the zigzag or tortuous paths whereby the foreign particles are removed therefrom.

The operation The shaft 31 is driven at a slow rate of speed, in any suitable manner, and this causes the outer cleaning unit to rotate. The incoming air flows downwardly as indicated by the arrows in Fig. 1 and flows almost entirely around the rotary cleaning element and inwardly through the curved passages between the discs, the foreign particles impinging against the sheet metal discs and sticking thereto. Continued rotation of the discs gradually submerges them under the oil, as indicated by numeral 51, see Fig. 1, and then when the discs leave the oil bath the excess oil drains therefrom and the discs are thoroughly cleaned.

As the several discs travel upwardly and oil drips therefrom onto the filtering material'50 of the stationary cleaning element all foreign particles are removed from the stationary cleaning device.

Next, the air passes upwardly after a change in its direction of movement and the velocity of the air is decreased down to the enlargement of the outlet. The air flows through the screen 23 and then upwardly through the outlet pipe 26 to the air inlet of the carburetor (not shown).

From the above description it will be appreciated that my device, although relatively simple in construction, nevertheless is elcient for the purposes intended and remains so during its use. Particular attention is directed to the novel disc construction, see Figs. 4 and 5.A t

The invention is described in the appended claims and is to be considered comprehensive of all forms of structure coming Within their scope.

I claim: y

l. An article of manufacture of the class described comprising, a rectangularly shaped central body casting, a crankcase portion detachably connected thereto at its lower side, an upper member having a depending chamber at one end there of resting upon and attached to the central body member, a top cover plate having an outlet located over and in communication with the said chamber, a second cover plate having an inlet extending over the remainder of the top, said chamber having an opening leading thereinto, a stationary cleaner of cylindrical shape positioned in alinement with said opening and located interiorly of the said body casting, a series of discs of annular shape mounted for revolving about the discs so that the other end of the space is located adjacent the partition and around the opening therethrough for the purpose described.

3. A non-clogging air washer of the class described, consisting of, a series of spaced discs, each disc having concentric corrugations therein to form three Areturn bent portions, means for mounting the discs in superimposed relationship whereby the central corrugation of one disc extends Within the corresponding recess of the adja-- cent disc, a housing having a partition therein, said partition having an opening therethrough, means for mounting the discs about the said opening at one side of the said partition, and plate means for closing the space at the other end of the discs.

4. A combination of elements as set forth in claim 3 but also including an air cleaner having an axial extension, said extension being engaged in the opening through the partition.

5. In combination, a housing having two alined openings near the top thereof, a removable cap for one opening, a stuffing box construction mounted in the other opening, a shaft in said box construction, driving means on the inner end of the shaft, an air cleaning device mounted inside of said housing, driven means attached thereto, said driving means engaging the driven means, the stuffing box construction and the removable cap being interchangeable for the purpose described.

6. In combination with the air inlet of a carburetor, a cleaning unit of the character described comprising a plurality of discsattached together, each disc being formed of absolutely smooth sheet metal for the purpose described 'and each disc being of annular shape and having its central portion bowed outwardly in one'hirection and its bowed portions will pass through the adjacent disc at four points.

ALBIN A. CARLSON 

